How many isomers of c4h10o nmr

What are the isomers of C3H6O?

They are:

Prop-2-en-1-ol


(from commons.wikimedia.org)

Methoxyethene

Propanone


(from www.meritnation.com)

And its tautomer,

Prop-1-en-2-ol

Propanal


(from commons.wikimedia.org)

And its two tautomeric isomers

() -Prop-1-en-1-ol

other

() -Prop-1-en-1-ol

Then we have

Cyclopropanol

Oxetanes

() -Methyl oxiranes

() -Methyl oxiranes

And that makes 11 isomers!